@layer utilities {
  .kvart-container {
    width: min(1120px, calc(100% - 2.5rem));
    margin-inline: auto;
  }

  .kvart-section {
    padding-block: clamp(3.25rem, 5vw, 5.5rem);
  }

  .kvart-kicker {
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: 0.78rem;
    color: hsl(var(--muted-foreground));
  }

  .kvart-h1 {
    font-family: var(--font-serif);
    letter-spacing: -0.02em;
    line-height: 1.02;
  }

  .kvart-h2 {
    font-family: var(--font-serif);
    letter-spacing: -0.01em;
  }

  .kvart-card {
    background:
      radial-gradient(1200px 700px at 20% -10%, hsl(var(--accent) / 0.14), transparent 55%),
      linear-gradient(180deg, hsl(var(--card) / 0.92), hsl(var(--card) / 0.72));
    border: 1px solid hsl(var(--border) / 0.7);
    border-radius: 1.25rem;
    box-shadow:
      0 1px 0 hsl(var(--foreground) / 0.04) inset,
      0 28px 60px hsl(0 0% 0% / 0.32);
  }

  .kvart-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.95rem 1.1rem;
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.01em;
    border: 1px solid hsl(var(--accent) / 0.38);
    background: linear-gradient(180deg, hsl(var(--accent) / 0.18), hsl(var(--accent) / 0.08));
    color: hsl(var(--foreground));
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
  }

  .kvart-btn:hover {
    transform: translateY(-1px);
    background: linear-gradient(180deg, hsl(var(--accent) / 0.24), hsl(var(--accent) / 0.10));
    border-color: hsl(var(--accent) / 0.55);
  }

  .kvart-btn:active {
    transform: translateY(0px);
  }

  .kvart-outline {
    border: 1px solid hsl(var(--border) / 0.7);
    background: linear-gradient(180deg, hsl(var(--card) / 0.55), hsl(var(--card) / 0.30));
  }

  .kvart-outline:hover {
    border-color: hsl(var(--accent) / 0.45);
  }

  .kvart-grid {
    display: grid;
    gap: 1rem;
  }

  @media (min-width: 768px) {
    .kvart-grid.cols-2 {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .kvart-grid.cols-3 {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
  }

  .kvart-fine {
    color: hsl(var(--muted-foreground));
    font-size: 0.95rem;
    line-height: 1.55;
  }

  .kvart-divider {
    height: 1px;
    width: 100%;
    background: linear-gradient(90deg, transparent, hsl(var(--border) / 0.8), transparent);
  }

  .kvart-noise {
    position: relative;
  }

  .kvart-noise::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.06;
    mix-blend-mode: overlay;
    background-image:
      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  }

  .kvart-glow {
    position: absolute;
    inset: -280px -220px auto auto;
    width: 560px;
    height: 560px;
    background: radial-gradient(circle at 30% 30%, hsl(var(--accent) / 0.22), transparent 62%);
    filter: blur(18px);
    pointer-events: none;
    opacity: 0.9;
  }

  .kvart-hero-overlay {
    position: absolute;
    inset: 0;
    background:
      radial-gradient(1000px 560px at 15% 15%, hsl(var(--accent) / 0.18), transparent 55%),
      linear-gradient(180deg, transparent 10%, hsl(var(--background) / 0.72) 72%, hsl(var(--background) / 0.92) 100%);
    pointer-events: none;
  }

  .kvart-hero-tint {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(180deg, hsl(var(--brand-olive) / 0.75), hsl(var(--background) / 0.92)),
      radial-gradient(1200px 700px at 20% 15%, hsl(var(--accent) / 0.20), transparent 58%);
    mix-blend-mode: multiply;
    pointer-events: none;
  }

  .kvart-light {
    background: linear-gradient(180deg, hsl(var(--surface-light)), hsl(var(--surface-light-2)));
    color: hsl(var(--text-dark));
  }

  .kvart-light .kvart-kicker {
    color: hsl(var(--text-dark) / 0.65);
  }

  .kvart-light .kvart-h2 {
    color: hsl(var(--text-dark));
  }

  .kvart-split {
    display: grid;
    gap: 1.25rem;
    align-items: center;
  }

  @media (min-width: 900px) {
    .kvart-split {
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
  }

  .kvart-split-text {
    order: 2;
  }

  .kvart-split-media {
    order: 1;
  }

  @media (min-width: 900px) {
    .kvart-split-text {
      order: 1;
    }

    .kvart-split-media {
      order: 2;
    }
  }

  .kvart-media-card {
    position: relative;
    overflow: hidden;
    border-radius: 1.25rem;
    border: 1px solid hsl(var(--border) / 0.7);
    background: hsl(var(--card) / 0.5);
    box-shadow:
      0 1px 0 hsl(var(--foreground) / 0.05) inset,
      0 28px 60px hsl(0 0% 0% / 0.32);
    aspect-ratio: 16/10;
  }

  .kvart-media-card-light {
    border-color: hsl(0 0% 0% / 0.10);
    box-shadow: 0 18px 50px hsl(0 0% 0% / 0.18);
  }

  .kvart-media-overlay {
    position: absolute;
    inset: 0;
    background:
      radial-gradient(900px 560px at 20% 10%, hsl(var(--accent) / 0.18), transparent 55%),
      linear-gradient(180deg, transparent 45%, hsl(var(--background) / 0.88) 100%);
    pointer-events: none;
  }

  .kvart-media-overlay-light {
    background:
      radial-gradient(900px 560px at 20% 10%, hsl(var(--accent) / 0.16), transparent 55%),
      linear-gradient(180deg, transparent 40%, hsl(var(--surface-light-2) / 0.88) 100%);
  }

  .kvart-media-label {
    position: absolute;
    left: 1rem;
    bottom: 1rem;
    font-weight: 700;
    letter-spacing: 0.01em;
  }

  .kvart-media-label-light {
    color: hsl(var(--text-dark));
  }

  .kvart-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    border: 1px solid hsl(var(--accent) / 0.35);
    background: linear-gradient(180deg, hsl(var(--accent) / 0.14), hsl(var(--accent) / 0.05));
    padding: 0.45rem 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
  }

  .kvart-chip {
    display: inline-flex;
    align-items: baseline;
    gap: 0.55rem;
    border-radius: 999px;
    border: 1px solid hsl(var(--border) / 0.8);
    background: hsl(var(--card) / 0.35);
    padding: 0.45rem 0.7rem;
  }

  .kvart-tab {
    border-radius: 999px;
    border: 1px solid hsl(var(--border) / 0.75);
    background: linear-gradient(180deg, hsl(var(--card) / 0.55), hsl(var(--card) / 0.3));
    padding: 0.7rem 0.9rem;
    font-weight: 650;
    letter-spacing: 0.01em;
    color: hsl(var(--foreground) / 0.9);
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
  }

  .kvart-tab:hover {
    transform: translateY(-1px);
    border-color: hsl(var(--accent) / 0.45);
  }

  .kvart-tab.is-active {
    border-color: hsl(var(--accent) / 0.6);
    background: linear-gradient(180deg, hsl(var(--accent) / 0.18), hsl(var(--card) / 0.2));
  }

  .kvart-iconbtn {
    display: inline-flex;
    height: 42px;
    width: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid hsl(var(--border) / 0.75);
    background: hsl(var(--card) / 0.35);
    color: hsl(var(--foreground));
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
  }

  .kvart-iconbtn:hover {
    transform: translateY(-1px);
    border-color: hsl(var(--accent) / 0.5);
    background: hsl(var(--card) / 0.55);
  }

  .kvart-masonry {
    columns: 1;
    column-gap: 1rem;
  }

  @media (min-width: 640px) {
    .kvart-masonry {
      columns: 2;
    }
  }

  @media (min-width: 1024px) {
    .kvart-masonry {
      columns: 3;
    }
  }

  .kvart-photo {
    position: relative;
    display: block;
    width: 100%;
    overflow: hidden;
    border-radius: 1.1rem;
    border: 1px solid hsl(var(--border) / 0.65);
    background: hsl(var(--card) / 0.25);
    margin: 0 0 1rem;
    transform: translateZ(0);
    transition: transform 200ms ease, border-color 200ms ease;
  }

  .kvart-photo:hover {
    transform: translateY(-2px);
    border-color: hsl(var(--accent) / 0.5);
  }

  .kvart-photo img {
    transition: transform 420ms ease;
  }

  .kvart-photo:hover img {
    transform: scale(1.03);
  }

  .kvart-photo-meta {
    position: absolute;
    left: 0.85rem;
    bottom: 0.85rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
  }

  .kvart-pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    border: 1px solid hsl(var(--accent) / 0.45);
    background: hsl(var(--background) / 0.62);
    padding: 0.35rem 0.6rem;
    font-size: 0.78rem;
    font-weight: 650;
    letter-spacing: 0.01em;
    backdrop-filter: blur(8px);
  }
}